Building a dental office from the ground up: cost, land and timeline

How much does it cost to build a dental office?

In the Alithos estimator, a ground-up dental office costs $340 per square foot to construct at a standard finish and $420 at a premium finish. That is construction only. Add equipment, imaging, cabinetry, soft costs, IT and furniture, and working capital, and a 5-operatory standard build comes to about $1.45 million, or $1.38M to $1.53M as a planning range. Land comes on top.

These are planning assumptions, not survey data and not a quote. For a published check, a 2026 dental-lawyer guide puts ground-up dental construction at often $400 or more per square foot [2]. The model's rates sit at or slightly below that, so they are on the conservative side of published ranges. Your market may run higher. Here is the full model by size, generated from the same math as the cost benchmark on this site [1].

Monthly payments are on the point estimate, financed over 15 years at 8.25%, which is what the estimator assumes. It is not a rate any lender has offered. Space runs 500 square feet per operatory for 3 to 5 ops, 450 for 6 to 7, and 425 for 8 or more. How much space you actually need comes from your production plan, not from the lot.

What is inside the number?

Here is the 5-operatory build, line by line. Seeing the lines matters more than the total, because each one is a separate conversation with a separate vendor.

Construction is close to 60% of the standard total. That is why the per-square-foot rate and the square footage are the two numbers to test hardest. For more on what moves the rate, read dental office construction cost per square foot. For the equipment lines, see the dental equipment cost guide.

When does owning the building pencil?

Owning pencils when your production carries the extra debt, you plan to stay for a long time, and the land is right at a fair price. If any one of those is missing, a lease usually wins on cash flow.

Compare two 5-operatory, standard-finish projects in the model. A lease build-out totals $933,500, about $9,056 a month in debt service. The ground-up version totals $1,452,000, about $14,086 a month. That is $518,500 more capital and about $5,030 more a month, before you pay for land.

The lease, though, adds rent. JLL reports national average medical office rents in the mid-$20s per square foot per year, with new developments leasing at over $40 [3]. As an illustration only, 2,500 square feet at $25 is about $5,200 a month, and at $40 about $8,300. So the real comparison is lease debt plus rent versus ground-up debt plus your land payment. Taxes, insurance and maintenance land on you either way under many leases, but as owner you also carry the roof and the parking lot.

The full three-path model, including the condo option, is in build, lease, or condo. Market context on rents, occupancy and purchase options is in the dental office real estate guide, and the leased path is covered in the build-out cost guide.

How much land do you need for a dental office?

You need enough land for the building footprint plus the parking, setbacks, landscaping, drive aisles and stormwater area your local zoning code requires. Parking is usually the biggest piece, and your city sets the ratio, not your architect.

There is no reliable universal ratio of land to building, so I don't publish one. A single-story office needs more land than a two-story office of the same size, and parking ratios change from city to city. Start from the square footage your production plan calls for, then let the parcel and the code tell you whether it fits.

The real answer comes from four places:

• The zoning code. Parking ratios for medical and dental offices, setbacks, maximum lot coverage and landscaping minimums vary by city.
• Accessibility. New construction must meet the federal ADA Standards for Accessible Design, which cover accessible parking and routes into the building [15].
• Stormwater. Many jurisdictions require on-site detention, which takes land you cannot park on.
• Your growth plan. If you may add operatories later, buy the land for it now. The lot next door is often not for sale when you need it.

Before you make an offer, ask a civil engineer for a test fit: the building, parking count and stormwater drawn on the actual parcel. It costs far less than buying a lot that cannot hold the office you need.

What site due diligence is needed before buying land?

Before you close on land, confirm that a dental office is allowed, that utilities can serve it, and that the ground, title and environmental history hold no surprises. Most of this happens during the purchase contract's due-diligence period, so negotiate enough time to finish it.

• Zoning and use. Is a medical or dental office permitted by right, by conditional use, or only after a rezoning? Check parking, height, setback and sign rules at the same time.
• Utilities and capacity. Water, sewer, electrical, gas and data: where the nearest connection is, whether it has capacity, and who pays to bring it to your building. Dental offices run compressors, vacuum systems and imaging, so confirm the electrical service early.
• Survey and title. A boundary survey (lenders often ask for an ALTA/NSPS survey) and a title report show easements, encroachments and access rights.
• Phase I Environmental Site Assessment. Conducted to ASTM E1527-21, which the EPA recognizes as satisfying its All Appropriate Inquiries rule [14]. Many lenders ask for one before funding a commercial real estate loan. Ask yours.
• Geotechnical report. Soil bearing capacity and groundwater drive foundation design and cost.
• Flood zone. Check the parcel on FEMA's Flood Map Service Center [16]. A flood zone affects design, insurance and financing.
• Access and traffic. Curb cuts, turn lanes, visibility from the road, and whether the city will require a traffic study.
• Impact and connection fees. Ask the city and utilities for a written fee estimate. These can be large and are often missed in early budgets.
• Accessibility. Confirm the site can deliver an accessible route from parking to the entrance under the ADA Standards [15].

What soft costs are higher on ground-up builds?

Ground-up builds carry soft costs a leased build-out never sees: civil engineering, site surveys, geotechnical and environmental reports, larger permit and plan-review fees, and impact and utility connection fees. The model's 12% soft-cost line may be light for a ground-up project.

On the 5-operatory standard build, 12% of construction is $102,000. That line has to cover a long list on a ground-up project:

• Architect, plus structural, mechanical, electrical and plumbing (MEP) engineering for a whole building, not just an interior suite
• Civil engineering, grading and stormwater design
• Boundary survey, geotechnical report and Phase I environmental assessment
• Zoning or site-plan approvals, building permits and plan-review fees
• Impact fees and utility connection fees
• Builder's risk insurance during construction
• Construction loan fees and interest during the build
• Legal and accounting for the land purchase and loan closing

I use the same 12% for leased and ground-up projects in the estimator because it keeps the public model simple. On a real site I replace it with written fee proposals and the city's fee estimate, because on ground-up work several of these lines simply do not exist for a tenant. I won't put a number on how far above 12% your project will land. That depends on the site, and a made-up percentage is worse than an open question. More on lines that hide: the hidden costs of a dental office project.

How do you finance a ground-up dental office?

Most ground-up dental offices are financed with a construction loan that converts to a long-term loan when the building is done, often with an SBA 504 or 7(a) loan for the real estate and separate financing for equipment and working capital. Lenders fund construction in draws as work is completed and inspected.

Construction-to-permanent loans

During construction you typically pay interest only on the money drawn so far. At completion the loan converts to a term loan with principal and interest. Ask each lender how draws are inspected, what interest you will carry during the build, and when the permanent rate is set. Those three answers change your cash needs more than the headline rate.

SBA 504 basics

The SBA 504 program provides long-term, fixed-rate financing for major fixed assets such as land and buildings [4]. The usual structure has three parts [5]:

The higher contributions come from SBA regulations [6]. A startup practice is a new business, so plan on at least 15%. Whether a dental building counts as limited or single-purpose is a question for your lender. The SBA lists 504 loan sizes from $25,000 to $5.5 million, with 25-year terms for real estate and 10-year terms for equipment [5]. 504 proceeds cannot pay for working capital or inventory [4], so that money needs another source.

SBA occupancy rules for new construction

For new construction, SBA rules require you to occupy at least 60% of the rentable space from the start. You may permanently lease up to 20% to tenants, and you must plan to occupy some of the rest within three years and all of it within ten [7]. For an existing building, the threshold is 51%. These rules shape how big you can build if you hope to rent out part of it.

SBA 7(a) and dental lenders

SBA 7(a) loans go up to $5 million, with terms up to 25 years for real estate [5]. SBA caps the variable rate on 7(a) loans over $350,000 at the base rate plus 3.0%. With the prime rate at 7.00% in the Federal Reserve's October 30, 2026 release [8], that ceiling is about 10.0%. That is a ceiling, not a typical rate. Dental-focused lenders also lend on startups: Bank of America Practice Solutions, for example, advertises up to 100% project financing for new office startups, subject to credit approval [9].

Whatever the program, dental lenders commonly look for a debt-service coverage ratio of at least 1.25, as a guideline rather than a strict minimum [10]. On the 5-op standard build, the estimator's coverage line is about $211,000 a year: annual debt service times 1.25. Test your own numbers with the loan payment calculator and the DSCR calculator. The full lending picture is in the dental practice financing guide and what lenders want to see.

Should you use design-build or bid it out?

Design-build gives you one contract and an earlier price, but usually no competing bids on the same drawings to check it against. Design-bid-build has an architect finish the drawings first and lets several contractors bid against the same set, which takes longer but makes prices comparable.

On a ground-up project the stakes are higher than in a lease, because the contract covers the site, the shell and the interior. Whichever route you take, ask for prices broken out by scope, with allowances and exclusions listed. An allowance is a placeholder, not a price. The pros and cons of each route, and when each fits, are in design-build vs. design-bid-build.

I don't design or build. In the Project Navigator I do independent quote review: I read each contractor's quote against the budget and against the others, and show you where scope differs before you sign.

How long does a ground-up dental office take?

I plan 18 to 24 months from a serious land search to opening day for a ground-up dental office. That is my planning range, not an industry statistic. The biggest swings come from zoning approvals, permit review and utility work, which are mostly outside your control.

Run the practice side in parallel: insurance credentialing, any state registration your imaging equipment requires, hiring and marketing. If you are relocating, you are paying for the old office the whole time, so plan the overlap. The relocation guide covers that case, and how to open a dental practice covers the startup sequence.

What are the tax considerations of building a dental office?

For federal tax, land is not depreciable, the building is generally depreciated over 39 years, and equipment may qualify for faster write-offs such as Section 179 or bonus depreciation. A cost segregation study can move some building costs into shorter lives. This section is educational for tax year 2026. Confirm everything with your CPA.

The building and the land

IRS Publication 946 says you cannot depreciate land, because land does not wear out. A commercial building is nonresidential real property, recovered over 39 years on a straight-line basis with a mid-month convention [11]. So the part of your project that is land gets no depreciation at all, and the building gets a slow one. That is one reason the split between land, building and equipment matters on paper.

Cost segregation

A cost segregation study breaks a building's cost into parts. Some components may qualify as shorter-lived property or land improvements rather than 39-year building cost. The IRS publishes an audit techniques guide on these studies. It describes several methods and makes clear that detailed, well-documented, engineering-based studies hold up better than rough estimates [12]. Whether a study makes sense for your building, and what it would find, is a question for your CPA and a qualified preparer.

Equipment, Section 179 and bonus depreciation

For tax years beginning in 2026, the federal Section 179 limit is $2,560,000, reduced dollar for dollar once qualifying purchases exceed $4,090,000 [13]. The One Big Beautiful Bill Act made 100% bonus depreciation permanent for qualified property acquired and placed in service after January 19, 2025 [17]. The test is when property is placed in service during the tax year, not just when it is bought.

Publication 946 also lets qualified improvement property, and roofs, HVAC, fire protection, alarm and security systems, be treated as Section 179 property, but those categories apply to improvements made after a building is first placed in service [11]. On a brand-new building, ask your CPA how that affects the original construction versus later work.

State rules can differ. California, for example, limits Section 179 to $25,000, phasing out above $200,000 of purchases, and does not conform to federal bonus depreciation [18]. Try the Section 179 calculator for the federal math.

Should you lease extra space in your building to tenants?

Leasing part of your building can offset the mortgage and hold room for future growth, but it makes you a landlord and enlarges the project you have to finance. It works best when the tenant space is modest and the practice can carry the building without the rent.

The case for it:

• Rent from a tenant helps pay the debt, especially in the early years.
• The extra space is your expansion room. When you need more operatories, you take it back as the lease ends.
• A complementary tenant, such as a specialist, may refer patients both ways.

The risks:

• A bigger building costs more to build, and every square foot is financed whether or not a tenant shows up.
• Vacancy is your problem. So are tenant improvements, lease negotiation and repairs.
• Lenders may not count projected rent the way you hope. Ask how yours underwrites it.
• With SBA financing on new construction, you must occupy at least 60% and can permanently lease no more than 20% [7]. SBA 504 also excludes speculation and investment in rental real estate [4].

My test is simple: would the practice clear its coverage target with the tenant space empty? If yes, the tenant is upside. If no, the tenant is load-bearing, and that is a risk to name out loud.

What are the biggest risks of building a dental office from the ground up?

The biggest risks are that most parties are paid more when the project gets bigger, that delays cost money every month, and that interest rates can move before your loan is fixed. Overbuilding for your production ties all three together.

1. Everyone at the table is paid by size. A bigger building, a bigger equipment order and a bigger loan all mean bigger fees or sales for someone. None of that is sinister. It just means nobody else in the room is paid to make the project smaller. Size from your production first, then let the building follow.
2. Schedule risk. Every month of delay means more construction interest, more rent at your current office if you have one, and a later first day of collections. Zoning, permits and utilities are the usual culprits.
3. Rate risk. On the 5-op standard build, the estimator's $14,086 monthly payment assumes 8.25%. Ask each lender when your rate is set, whether it is fixed or variable, and what happens at conversion from construction to permanent financing.
4. Site surprises. Soil, environmental findings, utility extensions and impact fees can each add a line you did not plan. Finish due diligence before the land deal goes hard.
5. No contingency in the number. The public model has no separate contingency line. Ask how your plan and your lender handle one before you treat any total as final.

Run your own first pass in the cost estimator with the ground-up path selected. Then compare it to the lease path at the same size. The gap is the price of ownership, before land.

Where does an independent budget planner fit?

I build the budget and the coverage math before you sign a land contract, a design agreement or a loan. I am paid a flat fee by you alone, with no commissions from lenders, dealers, brokers or contractors. I am not a contractor, architect, broker, lender, attorney or CPA.

• Feasibility Check: $2,500 flat, a go / no-go screen on fit and coverage. It credits toward the Budget Plan.
• The Budget Plan: $7,500 to $10,000 flat fee, with scope set in writing. It includes build vs. lease vs. condo projections, a line-item equipment and imaging budget, Section 179 and tax modeling for your CPA to review, and a lender-ready package.
• Project Navigator: from $20,000, quoted per project. Owner-side advisory through opening, including independent quote review, design review against the budget and change-order review. Availability depends on your project's state and is confirmed before engagement.

Not sure which one fits? Compare the routes in dental office planning options compared, or see the full list of guides and the glossary for terms like DSCR and TI.

Frequently asked questions

How much land do I need for a dental office?

Enough for the building footprint plus the parking, setbacks, landscaping, drive aisles and stormwater area your local zoning code requires. Parking usually takes the most room, and your city sets the parking ratio. A civil engineer's test fit on the actual parcel gives the real answer, so get one before you make an offer.

Can I use an SBA 504 loan to build a dental office?

Yes. SBA 504 loans can fund the purchase of land and the construction of a building you will occupy. For new construction you must occupy at least 60% of the space. A new business generally contributes at least 15% of project cost. 504 proceeds cannot pay for working capital, so plan a separate source for it.

How long does it take to build a dental office from the ground up?

I plan 18 to 24 months from a serious land search to opening. That is my planning range, not an industry statistic. Zoning approvals, permit review and utility work cause most of the variation, and much of it is outside your control.

Is it better to build or lease a dental office?

It depends on whether your production can carry the extra debt, how long you plan to stay, and whether the land is right. In the Alithos model, a 5-operatory standard ground-up project costs $518,500 more than the same office in leased space, before land. The lease adds rent. Model both paths with your own numbers before touring anything.

Does the ground-up cost include land?

No. The Alithos ranges for ground-up builds exclude land. They cover construction, cabinetry, soft costs, equipment, imaging, IT and furniture, and $85,000 of working capital. Add the price of the lot, plus any unusual site work your parcel needs.

What is cost segregation, and does it apply to a dental building?

Cost segregation is a study that splits a building's cost into components, some of which may be depreciated faster than the 39 years used for nonresidential buildings. It can apply to a dental building you own. Whether it makes sense for yours is a question for your CPA and a qualified preparer. This is educational, not tax advice.

Sources

1. Alithos Advisory, 2026 dental office project cost planning ranges (Alithos estimator; planning model, not survey data) (2026). alithos.co/cost-benchmark
2. Dental & Medical Counsel (A. Oromchian), "A Dental Lawyer's Guide to Your Dental Office Build-Out" (2026). dmcounsel.com
3. JLL, "Medical outpatient buildings ready for active 2026 despite policy headwinds" (2026). jll.com
4. U.S. Small Business Administration, 504 loans (accessed 2026). sba.gov
5. U.S. Small Business Administration, Terms, conditions, and eligibility (accessed 2026). sba.gov
6. Code of Federal Regulations, 13 CFR 120.910, Borrower contribution (current 2026). ecfr.gov
7. Code of Federal Regulations, 13 CFR 120.131, Leasing part of new construction or existing building to another business (current 2026). ecfr.gov
8. Board of Governors of the Federal Reserve System, H.15 Selected Interest Rates (2026-10-30). federalreserve.gov
9. Bank of America Practice Solutions, Dentist loans (accessed 2026). bankofamerica.com
10. ADA News, "Ask the Expert: How much debt is too much when buying a dental practice?" (2026). adanews.ada.org
11. IRS, Publication 946, How to Depreciate Property (2025). irs.gov
12. IRS, Publication 5653, Cost Segregation Audit Techniques Guide (2025). irs.gov
13. IRS, Rev. Proc. 2025-32 (2025). irs.gov
14. U.S. Environmental Protection Agency, Brownfields All Appropriate Inquiries (ASTM E1527-21) (accessed 2026). epa.gov
15. U.S. Department of Justice, ADA.gov, Design Standards (accessed 2026). ada.gov
16. FEMA, Flood Map Service Center (accessed 2026). msc.fema.gov
17. IRS, Notice 2026-11, Interim Guidance on Additional First Year Depreciation (2026). irs.gov
18. California Franchise Tax Board, 2025 Instructions for Form FTB 3885A (2025). ftb.ca.gov

Every number on this page comes from the Alithos planning model, from the sources listed above, or, where labeled, from my own planning practice. Rates and SBA terms were checked October 31, 2026. How we research and update this page.

For a first pass, run the cost estimator with the ground-up and lease paths side by side. When you want both columns built on your production and your site, book a free Project Fit Call.